Answer / gopal manda

the principle of excitation is that,it is same as low
voltage dc generator,to generate high voltage,we need very
strength static magnetic field,which we creat by external
dc voltage, produce by ac or dc generator.so we excite the
fieldwinding of alternator.

what are the duties of commutator in motor and generator?

6 Answers   L&T,

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If I need to purchase a step-down transformer (from three phase 33kV 50Hz to 400/230V), what additional information do I need from the main supply power line?

1 Answers   MahaDiscom,

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which has more heat effect(dc or ac)

4 Answers   CCEL, TATA,

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Plz tell me how we can find that particular company has vacancy or not

0 Answers   L&T,

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what is the procedure for cable sizing or on what basis we will calculate the size of cable?????

6 Answers   ANG, Focus, Mecon,

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if we going for high voltage usages what are the considering factors, why those factors are effected.... please give me an answer related motor factors like wnidnig, frame, temp etc

1 Answers   ABB,

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I need to connect a synchronous generator to the grid using automatic synchronization and two circuit breakers (one for synchronization, one for end connection to the grid), how to determinate the required diameter of the cables?

0 Answers  

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why conductors of low tensile strength 1)produce greater sag and 2)can not be used for larger spans

1 Answers  

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what is your majour contributions in your present job

0 Answers   ESL,

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what is the effect of power factor to (a) voltage (b) transformers (c) generators (d)transmission lines

4 Answers  

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difference b/w eath and neutral

10 Answers   ABB,

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An automatic water heater is an example of which type of control system?

0 Answers   GE,

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